Propagation of a Dark Soliton in a Disordered Bose-Einstein Condensate

Journal Article · Fri Sep 23 00:00:00 EDT 2005 · Physical Review Letters

DOI:https://doi.org/10.1103/PhysRevLett.95.130403· OSTI ID:20696494

Bilas, Nicolas; Pavloff, Nicolas ^[1]

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1. Laboratoire de Physique Theorique et Modeles Statistiques, Universite Paris Sud, bat. 100, F-91405 Orsay Cedex (France)

We consider the propagation of a dark soliton in a quasi-1D Bose-Einstein condensate in presence of a random potential. This configuration involves nonlinear effects and disorder, and we argue that, contrarily to the study of stationary transmission coefficients through a nonlinear disordered slab, it is a well-defined problem. It is found that a dark soliton decays algebraically, over a characteristic length which is independent of its initial velocity, and much larger than both the healing length and the 1D scattering length of the system. We also determine the characteristic decay time.

• OSTI ID: 20696494
• Journal Information: Physical Review Letters, Vol. 95, Issue 13; Other Information: DOI: 10.1103/PhysRevLett.95.130403; (c) 2005 The American Physical Society; Country of input: International Atomic Energy Agency (IAEA); ISSN 0031-9007
• Country of Publication: United States
• Language: English

Related Subjects

71 CLASSICAL AND QUANTUM MECHANICS
GENERAL PHYSICS
BOSE-EINSTEIN CONDENSATION
NONLINEAR PROBLEMS
PARTICLE DECAY
POTENTIALS
RANDOMNESS
SCATTERING LENGTHS
SOLITONS
TRANSMISSION
VELOCITY